Commit | Line | Data |
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bc8080cb | 1 | /* |
dd9ebf1f | 2 | * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved. |
bc8080cb | 3 | * |
fc6cf995 | 4 | * Author: Yu Liu <yu.liu@freescale.com> |
73196cd3 | 5 | * Scott Wood <scottwood@freescale.com> |
4f802fe9 | 6 | * Ashish Kalra <ashish.kalra@freescale.com> |
73196cd3 | 7 | * Varun Sethi <varun.sethi@freescale.com> |
bc8080cb HB |
8 | * |
9 | * Description: | |
fc6cf995 SW |
10 | * This file is based on arch/powerpc/kvm/44x_tlb.h and |
11 | * arch/powerpc/include/asm/kvm_44x.h by Hollis Blanchard <hollisb@us.ibm.com>, | |
12 | * Copyright IBM Corp. 2007-2008 | |
bc8080cb HB |
13 | * |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License, version 2, as | |
16 | * published by the Free Software Foundation. | |
17 | */ | |
18 | ||
29a5a6f9 SW |
19 | #ifndef KVM_E500_H |
20 | #define KVM_E500_H | |
bc8080cb HB |
21 | |
22 | #include <linux/kvm_host.h> | |
0cfb50e5 | 23 | #include <asm/mmu-book3e.h> |
bc8080cb | 24 | #include <asm/tlb.h> |
fc6cf995 SW |
25 | |
26 | #define E500_PID_NUM 3 | |
27 | #define E500_TLB_NUM 2 | |
28 | ||
29 | #define E500_TLB_VALID 1 | |
30 | #define E500_TLB_DIRTY 2 | |
4f802fe9 | 31 | #define E500_TLB_BITMAP 4 |
fc6cf995 SW |
32 | |
33 | struct tlbe_ref { | |
34 | pfn_t pfn; | |
35 | unsigned int flags; /* E500_TLB_* */ | |
36 | }; | |
37 | ||
38 | struct tlbe_priv { | |
39 | struct tlbe_ref ref; /* TLB0 only -- TLB1 uses tlb_refs */ | |
40 | }; | |
41 | ||
bf7ca4bd | 42 | #ifdef CONFIG_KVM_E500V2 |
fc6cf995 | 43 | struct vcpu_id_table; |
8fdd21a2 | 44 | #endif |
fc6cf995 SW |
45 | |
46 | struct kvmppc_e500_tlb_params { | |
47 | int entries, ways, sets; | |
48 | }; | |
49 | ||
50 | struct kvmppc_vcpu_e500 { | |
52e1718c SW |
51 | struct kvm_vcpu vcpu; |
52 | ||
fc6cf995 SW |
53 | /* Unmodified copy of the guest's TLB -- shared with host userspace. */ |
54 | struct kvm_book3e_206_tlb_entry *gtlb_arch; | |
55 | ||
56 | /* Starting entry number in gtlb_arch[] */ | |
57 | int gtlb_offset[E500_TLB_NUM]; | |
58 | ||
59 | /* KVM internal information associated with each guest TLB entry */ | |
60 | struct tlbe_priv *gtlb_priv[E500_TLB_NUM]; | |
61 | ||
62 | struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM]; | |
63 | ||
64 | unsigned int gtlb_nv[E500_TLB_NUM]; | |
65 | ||
66 | /* | |
67 | * information associated with each host TLB entry -- | |
68 | * TLB1 only for now. If/when guest TLB1 entries can be | |
69 | * mapped with host TLB0, this will be used for that too. | |
70 | * | |
71 | * We don't want to use this for guest TLB0 because then we'd | |
72 | * have the overhead of doing the translation again even if | |
73 | * the entry is still in the guest TLB (e.g. we swapped out | |
74 | * and back, and our host TLB entries got evicted). | |
75 | */ | |
76 | struct tlbe_ref *tlb_refs[E500_TLB_NUM]; | |
77 | unsigned int host_tlb1_nv; | |
78 | ||
fc6cf995 | 79 | u32 svr; |
fc6cf995 SW |
80 | u32 l1csr0; |
81 | u32 l1csr1; | |
82 | u32 hid0; | |
83 | u32 hid1; | |
fc6cf995 SW |
84 | u64 mcar; |
85 | ||
86 | struct page **shared_tlb_pages; | |
87 | int num_shared_tlb_pages; | |
8fdd21a2 | 88 | |
4f802fe9 SW |
89 | u64 *g2h_tlb1_map; |
90 | unsigned int *h2g_tlb1_rmap; | |
91 | ||
bf7ca4bd | 92 | #ifdef CONFIG_KVM_E500V2 |
8fdd21a2 SW |
93 | u32 pid[E500_PID_NUM]; |
94 | ||
95 | /* vcpu id table */ | |
96 | struct vcpu_id_table *idt; | |
97 | #endif | |
fc6cf995 SW |
98 | }; |
99 | ||
100 | static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu) | |
101 | { | |
102 | return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu); | |
103 | } | |
bc8080cb | 104 | |
73196cd3 | 105 | |
dc83b8bc SW |
106 | /* This geometry is the legacy default -- can be overridden by userspace */ |
107 | #define KVM_E500_TLB0_WAY_SIZE 128 | |
108 | #define KVM_E500_TLB0_WAY_NUM 2 | |
bc8080cb HB |
109 | |
110 | #define KVM_E500_TLB0_SIZE (KVM_E500_TLB0_WAY_SIZE * KVM_E500_TLB0_WAY_NUM) | |
111 | #define KVM_E500_TLB1_SIZE 16 | |
112 | ||
113 | #define index_of(tlbsel, esel) (((tlbsel) << 16) | ((esel) & 0xFFFF)) | |
114 | #define tlbsel_of(index) ((index) >> 16) | |
115 | #define esel_of(index) ((index) & 0xFFFF) | |
116 | ||
117 | #define E500_TLB_USER_PERM_MASK (MAS3_UX|MAS3_UR|MAS3_UW) | |
118 | #define E500_TLB_SUPER_PERM_MASK (MAS3_SX|MAS3_SR|MAS3_SW) | |
119 | #define MAS2_ATTRIB_MASK \ | |
046a48b3 | 120 | (MAS2_X0 | MAS2_X1) |
bc8080cb HB |
121 | #define MAS3_ATTRIB_MASK \ |
122 | (MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \ | |
123 | | E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK) | |
124 | ||
52e1718c SW |
125 | int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, |
126 | ulong value); | |
127 | int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu); | |
128 | int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu); | |
129 | int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb); | |
ab9fc405 | 130 | int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int rt, int ra, int rb); |
52e1718c | 131 | int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb); |
52e1718c SW |
132 | int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500); |
133 | void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500); | |
134 | ||
135 | void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
136 | int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); | |
bc8080cb | 137 | |
8fdd21a2 | 138 | |
bf7ca4bd | 139 | #ifdef CONFIG_KVM_E500V2 |
8fdd21a2 SW |
140 | unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500, |
141 | unsigned int as, unsigned int gid, | |
142 | unsigned int pr, int avoid_recursion); | |
143 | #endif | |
144 | ||
bc8080cb | 145 | /* TLB helper functions */ |
dc83b8bc SW |
146 | static inline unsigned int |
147 | get_tlb_size(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb | 148 | { |
0cfb50e5 | 149 | return (tlbe->mas1 >> 7) & 0x1f; |
bc8080cb HB |
150 | } |
151 | ||
dc83b8bc | 152 | static inline gva_t get_tlb_eaddr(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
153 | { |
154 | return tlbe->mas2 & 0xfffff000; | |
155 | } | |
156 | ||
dc83b8bc | 157 | static inline u64 get_tlb_bytes(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
158 | { |
159 | unsigned int pgsize = get_tlb_size(tlbe); | |
0cfb50e5 | 160 | return 1ULL << 10 << pgsize; |
bc8080cb HB |
161 | } |
162 | ||
dc83b8bc | 163 | static inline gva_t get_tlb_end(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
164 | { |
165 | u64 bytes = get_tlb_bytes(tlbe); | |
166 | return get_tlb_eaddr(tlbe) + bytes - 1; | |
167 | } | |
168 | ||
dc83b8bc | 169 | static inline u64 get_tlb_raddr(const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb | 170 | { |
dc83b8bc | 171 | return tlbe->mas7_3 & ~0xfffULL; |
bc8080cb HB |
172 | } |
173 | ||
dc83b8bc SW |
174 | static inline unsigned int |
175 | get_tlb_tid(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
176 | { |
177 | return (tlbe->mas1 >> 16) & 0xff; | |
178 | } | |
179 | ||
dc83b8bc SW |
180 | static inline unsigned int |
181 | get_tlb_ts(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
182 | { |
183 | return (tlbe->mas1 >> 12) & 0x1; | |
184 | } | |
185 | ||
dc83b8bc SW |
186 | static inline unsigned int |
187 | get_tlb_v(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
188 | { |
189 | return (tlbe->mas1 >> 31) & 0x1; | |
190 | } | |
191 | ||
dc83b8bc SW |
192 | static inline unsigned int |
193 | get_tlb_iprot(const struct kvm_book3e_206_tlb_entry *tlbe) | |
bc8080cb HB |
194 | { |
195 | return (tlbe->mas1 >> 30) & 0x1; | |
196 | } | |
197 | ||
8fdd21a2 SW |
198 | static inline unsigned int |
199 | get_tlb_tsize(const struct kvm_book3e_206_tlb_entry *tlbe) | |
200 | { | |
201 | return (tlbe->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT; | |
202 | } | |
203 | ||
bc8080cb HB |
204 | static inline unsigned int get_cur_pid(struct kvm_vcpu *vcpu) |
205 | { | |
206 | return vcpu->arch.pid & 0xff; | |
207 | } | |
208 | ||
dd9ebf1f LY |
209 | static inline unsigned int get_cur_as(struct kvm_vcpu *vcpu) |
210 | { | |
211 | return !!(vcpu->arch.shared->msr & (MSR_IS | MSR_DS)); | |
212 | } | |
213 | ||
214 | static inline unsigned int get_cur_pr(struct kvm_vcpu *vcpu) | |
215 | { | |
216 | return !!(vcpu->arch.shared->msr & MSR_PR); | |
217 | } | |
218 | ||
b5904972 | 219 | static inline unsigned int get_cur_spid(const struct kvm_vcpu *vcpu) |
bc8080cb | 220 | { |
b5904972 | 221 | return (vcpu->arch.shared->mas6 >> 16) & 0xff; |
bc8080cb HB |
222 | } |
223 | ||
b5904972 | 224 | static inline unsigned int get_cur_sas(const struct kvm_vcpu *vcpu) |
bc8080cb | 225 | { |
b5904972 | 226 | return vcpu->arch.shared->mas6 & 0x1; |
bc8080cb HB |
227 | } |
228 | ||
b5904972 | 229 | static inline unsigned int get_tlb_tlbsel(const struct kvm_vcpu *vcpu) |
bc8080cb HB |
230 | { |
231 | /* | |
232 | * Manual says that tlbsel has 2 bits wide. | |
fb2838d4 | 233 | * Since we only have two TLBs, only lower bit is used. |
bc8080cb | 234 | */ |
b5904972 | 235 | return (vcpu->arch.shared->mas0 >> 28) & 0x1; |
bc8080cb HB |
236 | } |
237 | ||
b5904972 | 238 | static inline unsigned int get_tlb_nv_bit(const struct kvm_vcpu *vcpu) |
bc8080cb | 239 | { |
b5904972 | 240 | return vcpu->arch.shared->mas0 & 0xfff; |
bc8080cb HB |
241 | } |
242 | ||
b5904972 | 243 | static inline unsigned int get_tlb_esel_bit(const struct kvm_vcpu *vcpu) |
bc8080cb | 244 | { |
b5904972 | 245 | return (vcpu->arch.shared->mas0 >> 16) & 0xfff; |
bc8080cb HB |
246 | } |
247 | ||
bc8080cb | 248 | static inline int tlbe_is_host_safe(const struct kvm_vcpu *vcpu, |
dc83b8bc | 249 | const struct kvm_book3e_206_tlb_entry *tlbe) |
bc8080cb HB |
250 | { |
251 | gpa_t gpa; | |
252 | ||
253 | if (!get_tlb_v(tlbe)) | |
254 | return 0; | |
255 | ||
73196cd3 | 256 | #ifndef CONFIG_KVM_BOOKE_HV |
bc8080cb HB |
257 | /* Does it match current guest AS? */ |
258 | /* XXX what about IS != DS? */ | |
666e7252 | 259 | if (get_tlb_ts(tlbe) != !!(vcpu->arch.shared->msr & MSR_IS)) |
bc8080cb | 260 | return 0; |
73196cd3 | 261 | #endif |
bc8080cb HB |
262 | |
263 | gpa = get_tlb_raddr(tlbe); | |
264 | if (!gfn_to_memslot(vcpu->kvm, gpa >> PAGE_SHIFT)) | |
265 | /* Mapping is not for RAM. */ | |
266 | return 0; | |
267 | ||
268 | return 1; | |
269 | } | |
270 | ||
8fdd21a2 SW |
271 | static inline struct kvm_book3e_206_tlb_entry *get_entry( |
272 | struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, int entry) | |
273 | { | |
274 | int offset = vcpu_e500->gtlb_offset[tlbsel]; | |
275 | return &vcpu_e500->gtlb_arch[offset + entry]; | |
276 | } | |
277 | ||
278 | void kvmppc_e500_tlbil_one(struct kvmppc_vcpu_e500 *vcpu_e500, | |
279 | struct kvm_book3e_206_tlb_entry *gtlbe); | |
280 | void kvmppc_e500_tlbil_all(struct kvmppc_vcpu_e500 *vcpu_e500); | |
281 | ||
73196cd3 SW |
282 | #ifdef CONFIG_KVM_BOOKE_HV |
283 | #define kvmppc_e500_get_tlb_stid(vcpu, gtlbe) get_tlb_tid(gtlbe) | |
284 | #define get_tlbmiss_tid(vcpu) get_cur_pid(vcpu) | |
285 | #define get_tlb_sts(gtlbe) (gtlbe->mas1 & MAS1_TS) | |
286 | #else | |
8fdd21a2 SW |
287 | unsigned int kvmppc_e500_get_tlb_stid(struct kvm_vcpu *vcpu, |
288 | struct kvm_book3e_206_tlb_entry *gtlbe); | |
289 | ||
290 | static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu) | |
291 | { | |
292 | struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); | |
293 | unsigned int tidseld = (vcpu->arch.shared->mas4 >> 16) & 0xf; | |
294 | ||
295 | return vcpu_e500->pid[tidseld]; | |
296 | } | |
297 | ||
298 | /* Force TS=1 for all guest mappings. */ | |
299 | #define get_tlb_sts(gtlbe) (MAS1_TS) | |
73196cd3 | 300 | #endif /* !BOOKE_HV */ |
8fdd21a2 | 301 | |
29a5a6f9 | 302 | #endif /* KVM_E500_H */ |